Abstract
In multi-slice spiral computed tomography (CT) images interpolation artifacts are present. The relationship between the x-ray tube rotation angle and these artifacts is demonstrated. A head phantom was repeatedly scanned with a four-slice CT scanner at different pitch values. Two scans, made with identical scan parameters, nearly always have different x-ray tube starting angles. Consequently, artifacts appeared differently and residual artifacts appeared when subtractions were made. We conclude that only if the x-ray tube starting angle is equal for both scans or if a very low pitch is used, images are highly reproducible. (C) 2004 American Association of Physicists in Medicine
Original language | Undefined/Unknown |
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Pages (from-to) | 2785-2786 |
Journal | Medical physics |
Volume | 31 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2004 |
Keywords
- AMC wi-eigen